I'm trying enter a cheat code for finding something in Skyrim, but I don't know how to enter the cheat codes on the Xbox 360. Where and how do I do it?
You can't, console commands (or "cheat codes", as you put it), are exclusive to the PC version.
You can, however, move your save to PC and input the desired commands there, then transfer it back to your console. Transferring Skyrim saved games from one machine to another